Subtract 2/90 from 9/4
1st number: 2 1/4, 2nd number: 2/90
9/4 - 2/90 is 401/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
9/4 = 9 × 45/4 × 45 = 405/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
2/90 = 2 × 2/90 × 2 = 4/180 - Subtract the two like fractions:
405/180 - 4/180 = 405 - 4/180 = 401/180 - In mixed form: 241/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4-2/90 9/4-4/90 9/8-2/90 27/4-2/90 9/4-6/90 9/12-2/90 45/4-2/90 9/4-10/90 9/20-2/90 63/4-2/90 9/4-14/90 9/28-2/90